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The Gefran 600-R-R-0-0-1 is a microprocessor controller, format 48×48 (1/16 DIN), manufactured using SMT.
It provides an operator interface protected by a Lexan membrane, IP65 faceplate protection. It has 4 keys, two green LED displays each with 4 digits, 4 red signal LEDs for the 4 logic or relay outputs, and 3 other programmable LEDs to signal the various operational states of the instrument.
The main input for the process variable is universal; many signal types can be connected: thermocouples, resistance thermometers, thermistors, and normalized linear inputs, with custom linearization possible using the faceplate keys. The type of input is selected from the faceplate keys; no external shunts are required. A second auxiliary analog input from a current transformer is also available.
With the isolated digital input, the operator can: select one of two presettable setpoints, select Manual-Automatic mode, reset the alarms memory, or enable the hold function.
The instrument can have up to 4 outputs: relay (3A, 250V) or logic (12Vdc, 20mA). An analog output in voltage or current is also available. The function of each output is configurable from the faceplate keys. In addition to control and alarm outputs, outputs can repeat the state of the digital or retransmission input by process variable, setpoint, drift, alarm limits, and values acquired from the serial line. Another isolated output (10 or 24Vdc, 30mA max.) is available to power external transmitters.
The serial communication option (RS485 standard) allows connection to supervision systems and PLCs with two protocols: GEFRAN CENCAL and MODBUS RTU. Instrument programming is organized by grouping parameters in functional blocks (CFG for control parameters, Inp for inputs, Out for outputs, etc.). The instrument can also select display parameters based on hardware configuration, automatically masking irrelevant parameters.
The instrument is supplied with an “EASY” configuration with just a few parameters (only those for the model ordered and essential for controller operation). The operator sets the setpoint and alarm, then launches self-tuning from the button. A PC programming kit is available for simpler configuration, made up of a cable and guided program for Windows (data sheet code 80020).
Available from GEFOnline with North American stock and technical support from Nordic Sensors Industrial.
